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|13th November 2013, 11:36||#91|
Distinguished - BHPian
Join Date: Oct 2012
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Re: High Octane Fuel
I am a little confused here on some of the points raised
An engine has a certain, in essence fixed, compression, which means that it is designed for a certain octane number, e.g. 93. Putting a higher octane number fuel in that engine won't do a thing.
The octane numer is a measure to avoid knock effects. The other way around it would definitely affect engine performance in a negative way.
So if an engine is designed for say an octane number of 98 and you put it a fuel with an octane number of say 93, you could well induce engine knock.
Unless it's different in India, the octane number doesn't say anything about the iso -octane, or any property of the actual fuel in your tank. It's a comparitive test that determines the octane number. The USA measures it differently from Europe, so India might be different again, but the basic principle remains the same
So the increase in the octane number has no bearing on engine performance. The toluene will, at least in theory, increase the energy per unit, that you can extract from the fuel. I'm not sure on the real world affect, but if they are considerable I would be concerned on engine wear, mid to long term.
|13th November 2013, 14:12||#92|
Senior - BHPian
Join Date: Apr 2007
Thanked: 1,035 Times
Re: High Octane Fuel
As Jeroen has already noted, an engine is designed for a certain Octane number. Higher than that will not harm the engine, neither will give you any benefit. Lower than that will definitely harm your engine.
If any company like IOC shows benefit like higher mileage, lower fuel consumption - then it is complete loads of marketing baloney for suckers (= consumers in modern world).
Last edited by alpha1 : 13th November 2013 at 14:14.
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